Draw works of rotary well-drilling apparatus



gwvwtoz LL e f-lgzdck' .L. J. BLACK DRAW WORKS 0F ROTARY WELL DRILLINGAPPARATUS Filed Sept. 22, 1925 April 6 15 this character having PatentedApr. 6, 1926.

PATENT/OFFICE.

UNITED STATES.

mane. BLACKDF BEAUMONT, TEXAS.

nmw wonxs or ROTARY WELL-DRILLING APPARATUS.

Application filed September 22, 1925. Serial No. 57,936.-

To all whom it may concern:

Be it known that I, LEE J. BLACK, acitizen of the United States,residing at Beaumont, in the county of Jefferson and State of Texas,have invented certain new and useful Improvements in Draw Works ofRotary Well-Drilling Apparatus, of which the following is aspecification.

This invention relates to improvements in draw-works of rotary welldrilling appa- 'ratus. and more particularly to a-inethod of improvementwater ma an apparatus for cooling the brake flanges of the drum shaft ofthe draw-works.

An important object of the invention is to provide a. constructionwherein a shaft of associated therewith a plurality of brake anges maybe so constructed that a cooling fluid-may be posi- .1 tively circulatedthrough passages provided r in these brake flanges. I

A further object. of the invention is the f the method of conductingwater to such cooling flanges whereby this be successively employed in anumber 0 flanges associated withthe same shaft. These and other objectsI attain by the construction shown in the accompanying shaft o A thereona drum, generally designated at 11. 1 These drums usually consist of' acentral drawing, wherein-for thepurpose of illustration is shown apreferred embodiment of my invention and wherein Figure 1 is alongitudinalsecti'onal view through the drum shaft of a' draw worksconstructed in accordance with myinv'en- Figu re 2 is sectionftlirouglione of the brake flanges'and the-associated flange hubshowing the mannerof makingtliejconnec tions. therebetween.

Referring now more' particularly to the drawing 'the'numeral 10indicates the drum a. draw-works having mounted body portion 12 andv apair of end flanges 13 secured to the body portion and keyed, as at 14:,at their hubs 15 to the shaft; To

6 each flange 13 is secured a brake flange 16 with which a brake 17 isemployed.

In the use of such a draw-works,.in lower'-' ing a string of tools inthe well, it is quite common practice to.lower the tools against theaction of the brakes with the result that the flanges 16 become heatedand oftentimes burn out, necessitating their replacement before the workcan be continued. To assist ports 20 and 21.

"flanges 16 overhan the hub and through the hub at diametrical y opposedpoints, I form These ports, in addition to being spacedcircumferentially of the hub, are spaced longitudinally thereof and eachport at its inner end communicates with a channel formed by grooving theinner wall of the hub 15 at 22 for approximatclythreequarters of thecircumference of the hub,

The outer end of each port 20,21 is enlarged and screw-threaded, as at23, for the reception of a conduit section 24. In alignment with thisconduit section through the inner:

'wall of the flange 16, a threaded bore 25 is formed and with, thisthreaded bore 25, a

conduit section 26 'of such size that it slid ably fitswithin theconduit section 24 is engaged. It will be obvious that these two conduitsectionsmay be collapsed upon one another so as to'permit theirthreading into their respective seats and that when the threading iscompleted, these sections may be welded to one another, as at 27, andwill form acontinuous conduit which is not subject to leakage as wouldbe the ordinary coupling employed at this point.

By continuing the grooves 22 only through three-quarters of the innervcircumference of the hub sections15 of the flanges 13, a spaceisprovidedkfor the reception of the key 14 and at the same time thenecessity for accurate alignment of ports 28 and 29 formed in the wallof the shaft 10 with the ports 20 and 21 is "eliminated and a fairlywide range of position provided for the formation of these ports. Theshaft 10 isprovided with a longitudinal extending bore 30 with which theports 28 and 29 COII1m111'1l-' cate and between the ports 28 and 29,this bore is reduced to produce a shoulder 31 against which a plug 32may be seated to stop off the bore and insure that all, water passingthrough the bore must pass through the-port 29, theassociated groove 22,port 21, conduit sections 24 and 26, channel 19,

the second set of conduit connections 24 and 26, ports 20 and 28 to thebore. Thus, a forced circulation is provided through the drum and thiscirculation may be maintained in any suitable manner. I have shown feedand exhaust conduits 34 and having stufiing box-connection, as at 36 and37 with opposite ends of the shaft, but it will, of course, be obviousthat any suitable means for causing circulation through this shaft maybe employed. It will, of course, be understood that the conduits 3-1 and35 will be connected with the exhaust and intake of a pump ofsomesuitable character. It will furthermore be obvious that the shaftemployed might either be vertically or horizontally disposed and thatthe number of braking drums employed on the shaft might'be'extended, asis found desirable. I accordingly do not limit myself. to the specificstructure hereinbefore set forth except as hereinafter claimed.

I claim:

1. .In combination with a hollow shaft, a hub mounted upon the shaft andhaving internal grooves each in communication'with the interior of theshaft, 2. flange on the hub, a braking flange upon the hub flange andoverhanging the hub, a passage-way formed in each flange, axiallyaligned threaded openings formed in the braking flange and hub, theopenings of the braking flan e communicating with the passages, theopenings of the hub communicating with said grooves and a pair oftelescopically engaged conduits having their ends in threaded engagementwith the corresponding openings of the brake flange and hub and of acombined overall length greater than the distance between the brakeflange and hub and a sealing connection between said conduits. p

2. In combination with a hollow shaft, a hub mounted upon the shaft andhaving internal grooves each in communication with said rooms a air oftelesco )ica'llv enh 3 .1

gaged conduits having their ends in threaded engagement with thecorrespomling openings of the brake flange and hub and of a combinedoverall length greater than the distance between the brake flange andhub, a sealing connection between said conduits, ports in the walls ofthe shaft communicating with the grooves of the hub, the bore of theshaft being reduced intermediate said ports to thereby producea shoulderand a dam seated against said shoulder.

3. In combination with the hollow drum shaft of a d aw-works, aplurality of longi tudinally spaced braking drums mounted upon theshaft, a continuous channel formed in each braking drum, means forcausinga flow of fluid from end to end of the drum shaft, means forpositively causing circulation of the fluid through the passage of eachbrake flange during its passage from end to end of the drum shaftincluding conduits communicating at circnmferentially spaced points withthe passages of the brake flanges and at longitudinally spaced pointswith theinterior of the drum shaft and a dam in the drum shaft betweenthe points of connection of each inlet and outlet conduits of each brakeflange with the interior of the drum shaft, the bore of the drum shaftbeing reduced intermediate the point of communication of the inlet andoutlet conduits of each brake flange to produce shoulders, the ,damsbeing seated against said shoulders. I

In testimony whereof I aflix my signature.

LEE J. BLACK.

